Where is tps on 22re

There are slightly different measurements for the later model units. If someone knows the engine date at which the change below took effect, drop me an e-mail. My guess is the change took place with the change in the throttle body, early trucks TB is angled downwards, later trucks are horizontal.

Refer to the above figures for TPS terminal layout and ohm meter connections. If in doubt about the layout of the terminals, an easy way to identify the proper orientation is to identify the VTA-E2 terminal pairs.

E2 is at one end of the TPS connector or the other. VTA is one pin in from the opposite end. So, try one end of the TPS connector for E2 and see if the resistance varies properly, if not, try the other end.

Once the E2 end of the connector is identified, the rest of the pins should be laid out as indicated in Figure 2. Note : There is some variation in the "exact" resistance values among the various years, but in general test 1 should be a low resistance, under 1K or a few K ohms. Test 2 is under ohms, test 3 is open cicruit and tests 4 and 5 will be higher resistance, fabove ohms, more or less. Looking at these values, ohms seems to be the transition point where the ECU switches between a logic level of 0 and 1.

Anythng under ohms is sensed as a logic level 0 and anything over ohms is a logic evel 1. Nor, right around , things get a bit fuzzy, so that's why the low resistance readings are generally well below and the higher resistance readings are much larger than In the above tests, you are actually simulating various throttle positions and rotating the TPS on its base to achieve all the above conditions.

While the above tests performed at the TPS itself do verify that the sensor itself it functioning, it does not test the continuity of the wiring in the harness that ultimately connects the TPS signals to the ECU. Problems can include poor shifting and hunting between gears due to the engine computer seeing apparent throttle position changes coming from a flaky TPS.

Since it is the TPS that tells the engine's ECU that you are idle, if that setting is off, setting timing can be difficult, since insertion of the timing check jumper won't have any affect on the engine. So, how does a TPS fail? Most likely one of two things will cause a TPS to fail. If you look inside one , you'll see it basically consists of a printed circuit board with a combination of conductive and resistive strips in a circular pattern, over which wiper contacts slide.

This serves to generate the various resistance readings at varying throttle positions. The usual failure is for what used to be a low resistance to become an open connection i. Upon visual investigation, its usually the case that the contact area on the PC board is burnt or dirty, leading to the open circuit reading. The throttle body controls the airflow into the engine and the fuel injectors supply the proper amount of fuel to the engine depending upon operating conditions.

The throttle body contains the throttle valve that it operated by the accelerator pedal in the driver's compartment.

The valve serves to regulate the amount or air that gets introduced into the engine. The fuel injectors spray atomized fuel into the intake of each cylinder in response to an electrical signal from the engine computer ECU. One determining factor among many for the amount of fuel to inject is based upon the position of the throttle valve, which is determined by the throttle position sensor TPS. Periodically, the throttle body should be cleaned or checked for a buildup of sludge that may clog the air bypasses, vacuum ports, or prevent the throttle plate from closing to its proper position.

This should be checked prior to any adjustment of the TPS. Crankcase vapors are commonly vented into the throttle body for re-introduction into the combustion process by the Exhaust Gas Recirculation, or EGR, valve. These vapors can leave an oily residue on the back of the throttle pate and allow sludge and dirt to accumulate. The throttle body can easily be cleaned while on the vehicle with a little carburetor cleaner and a cloth or throttle body cleaners.

However, for heavy sludge buildup, it should be completely removed, washed in solvent, and dried thoroughly. When doing this, it is important that the TPS should be removed to prevent contamination a primary cause for failure and the throttle body-to-plenum gasket replaced.

We strongly recommend cleaning your throttle body thoroughly before attempting any adjustment. The Toyota 22RE engines use a "Linear" throttle position sensor. The TPS itself is simply a linear variable resistor that when driven by the ECU produces a linear voltage in a volt range, 0 volts being idle and up to 5 volts representing throttle opening angle.

Internally, there is also a switch that detects the idle position. Proper adjustment of the TPS is critical for engine performance, fuel economy, and emissions. Since Dan Ferrell has contributed general and consumer-oriented news to television and the Web. His work has appeared in Texas, New Mexico and Miami and on various websites. Step 1 Open the hood of your Toyota and locate the TP sensor.

Step 2 Remove the air cleaner assembly using a Phillips screwdriver. Step 3 Unplug the TPS electrical connector. Step 4 Locate the throttle linkage mechanism on one side of the throttle body. Step 5 Rotate the throttle linkage mechanism with your hand and see how the lever on the mechanism that hits a stop screw when you release it.

Step 6 Insert a 0. Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: Suggested with your install